551014661 has 2 divisors, whose sum is σ = 551014662. Its totient is φ = 551014660.

The previous prime is 551014627. The next prime is 551014669. The reversal of 551014661 is 166410155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 538518436 + 12496225 = 23206^2 + 3535^2 .

It is a cyclic number.

It is not a de Polignac number, because 551014661 - 2²² = 546820357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551014669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275507330 + 275507331.

It is an arithmetic number, because the mean of its divisors is an integer number (275507331).

Almost surely, 2^551014661 is an apocalyptic number.

It is an amenable number.

551014661 is a deficient number, since it is larger than the sum of its proper divisors (1).

551014661 is an equidigital number, since it uses as much as digits as its factorization.

551014661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 551014661 is about 23473.7014763330. The cubic root of 551014661 is about 819.8247994721.

The spelling of 551014661 in words is "five hundred fifty-one million, fourteen thousand, six hundred sixty-one".